CN215024659U - Connecting pipe, pipe assembly, breathing mask and ventilation treatment equipment - Google Patents

Abstract

The utility model relates to a treatment facility field of ventilating discloses a connecting pipe, pipe assembly, respirator and treatment facility of ventilating. The connecting pipe includes respirator link and coupling link, and the respirator link is used for being connected with respirator's frame, and the coupling link is used for being connected with the one end that has the coupling of air flue, is provided with on the outer peripheral face of coupling link to be used for cooperating with the assistance-localization real-time structure of assistance-localization real-time connecting pipe with the ultrasonic welding tool when the one end of coupling link and coupling is connected. When connecting pipe and coupling pass through ultrasonic bonding and connect, the auxiliary positioning structure can mutually support with the ultrasonic bonding tool with auxiliary positioning connecting pipe to make the connecting pipe more stable when the ultrasonic bonding, like this, just can avoid taking place the rosin joint, make the ultrasonic bonding more firm, thereby can guarantee to have reliable and stable joint strength between connecting pipe and the coupling, avoid taking place the phenomenon of rupture at the junction of connecting pipe and coupling.

Description

Connecting pipe, pipe assembly, breathing mask and ventilation treatment equipment

Technical Field

The utility model relates to a treatment equipment field of ventilating specifically relates to a connecting pipe, a pipe assembly, a respirator and a treatment equipment of ventilating.

Background

The respiratory mask assembly includes a frame and a cushion that sealingly engage to form a breathing cavity that receives the nose or nose and mouth of the wearer, and headgear that engages the frame to hold the respiratory mask in place on the face of the wearer, the cushion exerting pressure in contact with the face to sealingly engage the cushion with the face of the wearer. Meanwhile, the frame is connected with a bent pipe, and an air passage in the bent pipe is communicated with the breathing cavity.

Now, referring to fig. 15 and 16, the end surface of the coupling boss attaching end of a prior art coupling pipe 1 and the end surface of the coupling boss 5 are brought into end surface contact and bonded by glue.

However, in such an end-face connection structure of the connection pipe 1 and the pipe joint 5, safety and sanitation are low, and there is often a case where the connection structure is broken.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a connecting pipe for respirator, this connecting pipe can guarantee to have reliable and stable joint strength between connecting pipe and the coupling when being connected with the coupling, avoids taking place phenomenon of rupture at the junction of connecting pipe and coupling to promote safety and sanitation nature, aesthetic property and leakproofness.

In order to achieve the above object, the utility model provides a connecting pipe, the connecting pipe includes respirator link and coupling link, the respirator link is used for the frame attach with respirator, the coupling link is used for being connected with the one end that has the coupling of air flue, wherein, be provided with assistance-localization real-time structure on the outer peripheral face of coupling link, assistance-localization real-time structure is used for cooperate with assistance-localization real-time with the ultrasonic welding tool when the one end of coupling link and coupling is connected the connecting pipe.

In the technical scheme, because the outer peripheral face of the pipe joint connecting end is provided with the auxiliary positioning structure which is used for being matched with the ultrasonic welding jig to position the connecting pipe in an auxiliary manner when the pipe joint connecting end is connected with one end of the pipe joint, in this way, when the connecting pipe is connected with the pipe joint through ultrasonic welding, the auxiliary positioning structure can be matched with the ultrasonic welding jig to position the connecting pipe in an auxiliary manner, so that the connecting pipe is more stable during ultrasonic welding, therefore, false welding can be avoided, the ultrasonic welding is more stable and firm, stable and reliable connecting strength between the connecting pipe and the pipe joint can be ensured, and the phenomenon of fracture at the connecting part of the connecting pipe and the pipe joint is avoided.

Further, the auxiliary positioning structure includes a circumferential flange radially outwardly protruding from an outer circumferential surface of the coupling boss connection end.

Still further, an axial end face of the circumferential flange on a side for facing the pipe joint and an end face of the pipe joint connection end are flush.

Further, the projection height of the circumferential flange is intended to be the same as the projection height of the circumferential projection of the one end of the pipe joint.

Further, the circumferential flange is an annular flange, or the circumferential flange is a plurality of circumferential flanges arranged at intervals in the circumferential direction.

In addition, the auxiliary fixing and positioning structure comprises a circumferential groove which is formed by radially and outwards recessing on the outer peripheral surface of the pipe joint connecting end.

Further, the circumferential groove is an annular groove, or the circumferential grooves are a plurality of and circumferentially spaced apart.

In addition, a clamping groove extending in the circumferential direction is formed in the end face of the connecting end of the pipe joint and is used for being clamped and matched with a clamping protrusion extending in the circumferential direction on the end face of one end of the pipe joint;

and/or the presence of a gas in the gas,

the joint that is formed with circumference extension on the terminal surface of coupling link is protruding, the joint arch be used for with the one end terminal surface of coupling on the joint groove joint cooperation of circumference extension.

In addition, a safety valve hole is formed in the pipe wall of the pipe joint connecting end, a mounting hole is formed in the end face of the pipe joint connecting end, and the mounting hole is used for assembling a mounting head of a safety valve plate capable of opening and closing the safety valve hole.

Furthermore, the present invention provides a pipe assembly, the pipe assembly including a pipe joint having an air passage and the connection pipe described above, wherein the connection pipe said pipe joint connection end with one end of the pipe joint is connected.

Thus, as described above, the pipe assembly has stable and reliable coupling strength between the coupling pipe and the pipe joint.

Furthermore, a circumferentially extending clamping groove is formed on the end face of the connecting end of the pipe joint, a circumferentially extending clamping protrusion is formed on the end face of one end of the pipe joint, and the clamping protrusion is in clamping fit with the clamping groove;

and/or the presence of a gas in the gas,

when the joint that is formed with circumference extension on the terminal surface of coupling link is protruding, be formed with the joint groove of circumference extension on the one end terminal surface of coupling, the joint protruding with joint groove joint cooperation.

Further, when the auxiliary positioning structure includes a circumferential flange radially outwardly projecting from the outer peripheral surface of the pipe joint connection end, a projection height of the circumferential flange is the same as a projection height of the circumferential projection of the one end of the pipe joint.

Further, when a safety valve hole is formed on the pipe wall of the pipe joint connecting end, a safety valve plate is arranged between the pipe joint connecting end and one end of the pipe joint, wherein a ventilation stopping structure is arranged at the air passage at one end of the pipe joint; the safety valve plate can be located at a position where the safety valve plate is stopped on the ventilation stopping structure so as to seal the air channel opening and open the safety valve opening, and the safety valve plate can be turned over to a position where the air channel opening is opened and the safety valve opening is closed under the air inlet pressure of the therapeutic gas conveyed through the air channel.

Furthermore, the utility model provides a respirator, respirator includes the frame and above arbitrary the pipe assembly, wherein, respirator link with frame attach. Thus, as described above, the overall quality of the breathing mask is effectively improved.

Finally, the utility model provides a ventilation treatment device, which comprises the breathing mask.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a connection tube according to an embodiment of the present invention;

FIG. 2 is a schematic view of another perspective of the connector of FIG. 1;

FIG. 3 is a schematic view showing the construction of the connection pipe and the pipe joint of FIG. 1;

FIG. 4 is a schematic cross-sectional structural view of one location of FIG. 3;

FIG. 5 is an enlarged schematic view of a dotted circle portion in FIG. 4;

fig. 6 is a schematic view of a connection tube according to another embodiment of the present invention;

FIG. 7 is a schematic view of another perspective of the connection tube of FIG. 6;

FIG. 8 is a schematic view showing the construction of the connection pipe and the pipe joint of FIG. 6;

FIG. 9 is an exploded state diagram of FIG. 8;

FIG. 10 is a cross-sectional structural schematic of one location of FIG. 8;

fig. 11 is a schematic view of a tube fitting in a tube assembly according to an embodiment of the present invention;

FIG. 12 is a perspective view of a prior art connection tube and fitting;

FIG. 13 is an exploded state view of FIG. 12;

FIG. 14 is a schematic cross-sectional view of FIG. 12;

FIG. 15 is a perspective view of another prior art connecting tube;

fig. 16 is a sectional structural view showing a position where the prior art connection pipe and the pipe joint of fig. 15 are connected.

Description of the reference numerals

1-connecting tube, 2-breathing mask connecting end, 3-tube joint connecting end, 4-air flue, 5-tube joint, 6-circumferential projection, 7-annular flange, 8-annular groove, 9-snap groove, 10-snap projection, 11-safety valve hole, 12-mounting hole, 13-safety valve plate, 14-tube assembly, 15-air channel opening, 16-ventilation stop structure, 17-mounting head, 18-annular snap groove, 19-circumferential clip block, 20-safety valve plate mounting hole, 21-safety valve plate snap groove.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Fig. 12 to 14 show a structure of connecting the coupling pipe 1 and the pipe joint 5 in the prior art, in fig. 12 to 14, a ring of annular catching grooves 18 are formed on the pipe joint connecting end 3 of the coupling pipe 1, and correspondingly, a plurality of circumferentially spaced circumferential catching blocks 19 are formed on the inner circumferential surface of one end of the pipe joint 5, and the pipe joint connecting end 3 is inserted into one end of the pipe joint 5, so that the circumferential catching blocks 19 are caught in the annular catching grooves 18, thereby connecting the coupling pipe 1 and the pipe joint 5 together. In addition, before the connection pipe 1 and the pipe joint 5 are connected, the safety valve sheet 13 needs to be put into the pipe joint connection end 3 from the open port of the pipe joint connection end 3, and the connection fixture of the safety valve sheet 13 needs to be clamped into the safety valve sheet mounting hole 20, so that the safety valve sheet 13 is arranged in the connection pipe 1. Like this, in the in-service use, when respiratory pressure equipment normally works, the breathing mask is sent to through connecting pipe 1 and coupling 5 to the treatment gas, the free end of safety valve piece 13 is blown up to 11 departments of safety valve hole this moment, make safety valve hole 11 close, thereby can keep treatment pressure unchangeable, when respiratory pressure equipment breaks down or the pipeline takes place to block up, safety valve piece 13 reconversion, safety valve hole 11 is opened, the gas of patient's exhalation can be exchanged with the external world by safety valve hole, thereby avoid the risk of suffocating.

However, for the structure that the connection pipe 1 and the pipe joint 5 shown in fig. 12-14 are connected, the technician of the present application finds in practice that the safety valve sheet installation hole 20 is far away from the pipe joint connection end 3, which makes the installation of the safety valve sheet more difficult, the production efficiency is not high, in addition, the technician of the present application also finds that the one ends of the pipe joint connection end 3 and the pipe joint 5 are buckled and connected through the circumferential fixture block 19 and the annular clamping groove 18, if the buckling amount is too large, the installation of the connection pipe 1 and the pipe joint 5 is difficult, if the buckling amount is too small, the connection pipe 1 and the pipe joint 5 are easy to fall off, in addition, the clamping of the circumferential fixture block 19 and the annular clamping groove 18 can cause a sealing problem, and air leakage is easy.

Fig. 15 and 16 show another structure of connecting pipe 1 and pipe joint 5 in the prior art, in the structure shown in fig. 15 and 16, a safety valve sheet clamping groove 21 is formed on the end surface of pipe joint connecting end 3 of connecting pipe 1, the connecting fixture block of safety valve sheet 13 can be clamped in the safety valve sheet clamping groove 21, then the end surface of pipe joint connecting end 3 and the end surface of pipe joint 5 are in end surface contact, and the end surface contact is bonded and connected through glue, so that safety valve sheet 13 can be clamped and positioned between connecting pipe 1 and pipe joint 5.

However, in practice, the person skilled in the art will find that in the structure shown in fig. 15 and 16, the glue is a chemical product, which is prone to chemical contamination, and that the appearance of the glue is impaired when the glue overflows, and that in practical use, the joint end surface between the coupling pipe 1 and the pipe joint 5 bonded by the glue is prone to break when the glue falls to the ground or is collided by external force.

To this end, the skilled person provides a new connection tube 1. Referring to fig. 1 and 6, the utility model provides a connecting pipe 1 includes respirator link 2 and coupling link 3, respirator link 2 be used for with respirator's frame attach, coupling link 3 is used for being connected with the one end of coupling 5 that has air flue 4, wherein, is provided with the assistance-localization real-time structure on the outer peripheral face of coupling link 3, and this assistance-localization real-time structure is used for cooperating with the ultrasonic welding tool with assistance-localization real-time connecting pipe 1 when coupling link 3 and the one end of coupling 5 are connected.

Because the outer circumferential surface of the pipe joint connecting end 3 is provided with the auxiliary positioning structure which is matched with the ultrasonic welding jig to position the connecting pipe in an auxiliary manner when the pipe joint connecting end 3 is connected with one end of the pipe joint 5, when the connecting pipe 1 is connected with the pipe joint 5 through ultrasonic welding, the auxiliary positioning structure can be matched with the ultrasonic welding jig to position the connecting pipe 1 in an auxiliary manner, so that the connecting pipe 1 is more stable during ultrasonic welding, thus the connecting structure formed by the connecting pipe 1 and the pipe joint 5 through ultrasonic welding can avoid rosin joint and is more stable and firm, thereby the stable and reliable connecting strength between the connecting pipe 1 and the pipe joint 5 can be ensured, the fracture phenomenon at the connecting part of the connecting pipe 1 and the pipe joint 5 can be avoided, thus, the adoption of glue bonding can be avoided, the safety and sanitation of use are improved, and the attractiveness is ensured, the sealing performance is also improved.

In this connection pipe, the auxiliary positioning structure may have various structural forms, for example, in one structural form of the auxiliary positioning structure, the auxiliary positioning structure may include a plurality of positioning arms arranged at circumferential intervals that project radially outward from the outer peripheral surface of the pipe joint connection end 3.

Alternatively, in another form of construction of the auxiliary positioning structure, referring to fig. 1 to 5, the auxiliary positioning structure includes a circumferential flange projecting radially outwardly from the outer peripheral surface of the coupling boss connection end 3. Like this, when ultrasonic welding, the ultrasonic welding tool can mutually support with circumference flange, and for example, the centre gripping arm of ultrasonic welding tool can centre gripping on the axial terminal surface of one side of circumference flange back to the coupling, like this, can stably centre gripping location connecting pipe to make connecting pipe 1 more stable when ultrasonic welding.

Of course, the axial end face of the circumferential flange on the side facing the pipe joint may be axially spaced from the end face of the pipe joint connection end 3, so that, for example, the groove of the ultrasonic welding jig may be engaged with the circumferential flange, thereby stably clamping and positioning the connection pipe, so that the connection pipe 1 is more stable during ultrasonic welding.

Or, alternatively, in order to enhance the aesthetic appearance of the connection of the coupling pipe and the pipe joint, referring to fig. 1 and 5, the axial end surface of the circumferential flange, which is intended to face the side of the pipe joint, is flush with the end surface of the pipe joint connection end 3, so that, when the coupling pipe and the pipe joint are connected, the gap between the coupling pipe and the pipe joint will be reduced, thereby enhancing the aesthetic appearance.

In addition, in order to enhance the aesthetic appearance of the connection of the coupling pipe and the coupling boss, referring to fig. 3 to 5, the protrusion height of the circumferential flange is used to be the same as the protrusion height of the circumferential protrusion 6 of the one end of the coupling boss 5, so that the circumferential flange and the circumferential protrusion 6 of the one end of the coupling boss 5 are flush with each other after the coupling pipe 1 and the coupling boss 5 are connected, thereby enhancing the aesthetic appearance.

In addition, referring to fig. 1 and 2, the circumferential flange may be an annular flange 7, which may facilitate the ultrasonic welding jig to assist in positioning the connection pipe at any desired position. Or, alternatively, the circumferential flange is a plurality of circumferentially spaced-apart circumferential flange segments, i.e., a plurality of circumferentially spaced-apart circumferential flange segments are formed, such that the plurality of circumferentially spaced-apart circumferential flanges may also allow the ultrasonic welding jig to assist in positioning the connecting tube at any desired location.

Alternatively, in still another structural form of the auxiliary positioning structure, referring to fig. 6 to 10, the auxiliary fixing structure includes a circumferential groove formed by being recessed radially outward on the outer circumferential surface of the coupling-end 3. Like this, when ultrasonic bonding, the ultrasonic bonding tool can mutually support with circumferential groove, for example, the centre gripping arm of ultrasonic bonding tool can centre gripping in circumferential groove, like this, can stably centre gripping location connecting pipe to make connecting pipe 1 more stable when ultrasonic bonding.

In addition, referring to fig. 6, the circumferential groove is an annular groove 8, so that the ultrasonic welding jig can be used for assisting in positioning the connecting pipe at any required position. Or, alternatively, the circumferential groove is a plurality of circumferentially spaced circumferential groove segments, i.e., a plurality of circumferentially spaced circumferential groove segments are formed, such that the plurality of circumferentially spaced circumferential groove segments also allow the ultrasonic welding jig to assist in positioning the connecting tube at any desired location.

In addition, in order to improve the reliability and the stability of the ultrasonic welding connection between the connecting pipe 1 and the pipe joint 5, refer to fig. 2, fig. 4 and fig. 5, fig. 7, fig. 10 and fig. 11, a clamping groove 9 extending in the circumferential direction is formed on the end face of the pipe joint connecting end 3, and the clamping groove 9 is used for being in clamping fit with a clamping protrusion 10 extending in the circumferential direction on the end face of one end of the pipe joint 5, so that after the connecting pipe is connected with the pipe joint, the clamping protrusion 10 is clamped into the clamping groove 9, and then the surfaces of the clamping protrusion 10 and the clamping groove 9 contacting with each other are connected through ultrasonic welding, so that the connection contact area between the connecting pipe 1 and the pipe joint 5 is increased, thereby further improving the reliability and the stability of the connection between the connecting pipe 1 and the pipe joint 5, and avoiding the occurrence of a fracture phenomenon. And/or, be formed with the joint arch of circumference extension on the terminal surface of coupling link, the joint arch be used for with the one end terminal surface of coupling on the joint groove joint cooperation of circumference extension. Like this, the back is connected with the coupling to connecting pipe, and the joint protruding card is gone into to the joint inslot, then passes through the ultrasonic welding with the protruding and joint groove surface of mutual contact of joint and connects to increase the connection area of contact between connecting pipe 1 and the coupling 5, can further improve the reliability and the steadiness that connecting pipe 1 and coupling 5 are connected like this, avoid appearing the phenomenon of rupture.

Of course, the snap groove 9 may be a circumferential continuously extending annular groove, or may be a plurality of circumferentially spaced circumferential snap groove segments. Correspondingly, the snap-in flange 10 may be an annular snap-in flange extending continuously in the circumferential direction, or may be a plurality of circumferentially spaced-apart circumferential snap-in flange segments.

In addition, the end face of the pipe joint connecting end 3 is provided with clamping grooves 9 and clamping protrusions which are circumferentially arranged at intervals, for example, the clamping grooves 9 and the clamping protrusions are circumferentially and alternately arranged. Correspondingly, the pipe joint 5 is provided with a clamping flange and a clamping groove which are circumferentially arranged at intervals, for example, a plurality of clamping protrusions and a plurality of clamping grooves are circumferentially arranged alternately.

In addition, referring to fig. 2, 4, 7, 9 and 10, a safety valve hole 11 is formed on a pipe wall of the pipe joint connection end 3, and a mounting hole 12 is formed on an end surface of the pipe joint connection end 3, the mounting hole 12 being used to mount a mounting head 17 of a safety valve sheet 13 capable of opening and closing the safety valve hole 11. Thus, referring to fig. 4 and 10, the mounting head 17 can be installed in the mounting hole 12, so that the safety valve sheet 13 can be connected to a connecting pipe which is connected to the breathing mask and connected to the breathing pressure device, and then when the breathing pressure device normally works, the therapeutic gas is delivered to the breathing mask through the connecting pipe, referring to the solid arrow in fig. 4, at this time, the safety valve sheet 13 is blown up to the safety valve hole 11, so that the safety valve hole 11 is closed, thereby keeping the therapeutic pressure unchanged. And when respiratory pressure equipment breaks down or the pipeline takes place to block up, safety valve piece 13 reconversion, refer to figure 10 to make safety valve hole 11 open, the gas of patient's exhaling can be exchanged with the external world by safety valve hole 11 this moment, refer to the solid line arrow in figure 10, thereby avoid the risk of suffocation.

Further, the present invention provides a pipe assembly, referring to fig. 3, 4, 8, 9, 10 and 11, the pipe assembly 14 includes a pipe joint 5 having an air passage 4 and a connection pipe 1 as described in any of the above, wherein a pipe joint connection end 3 of the connection pipe 1 is connected with one end of the pipe joint 5. Thus, as described above, the pipe assembly has stable and reliable coupling strength between the coupling pipe and the pipe joint.

In addition, as above, be formed with the joint groove 9 of circumference extension on the terminal surface of coupling link 3, be formed with the protruding 10 of joint of circumference extension on the one end terminal surface of coupling 5, joint protruding 10 and the cooperation of joint groove 9 joint can pass through the ultrasonic bonding with the surface of joint protruding 10 and the mutual contact of joint groove 9 and connect to increase the connection area of contact between connecting pipe 1 and the coupling 5, can further improve the reliability and the steadiness that connecting pipe 1 and coupling 5 are connected like this, avoid appearing the phenomenon of rupture. And/or, when the joint protrusion extending in the circumferential direction is formed on the end face of the connecting end of the pipe joint, the joint groove extending in the circumferential direction is formed on the end face of one end of the pipe joint, and the joint protrusion is in joint fit with the joint groove 9. Like this, can pass through ultrasonic welding with the surface that joint arch 10 and joint groove 9 contacted each other and connect to increase the connection area of contact between connecting pipe 1 and the coupling 5, can further improve the reliability and the steadiness that connecting pipe 1 and coupling 5 are connected like this, avoid appearing the phenomenon of splitting.

In addition, referring to fig. 3 and 5, when the auxiliary positioning structure includes a circumferential flange radially outwardly protruding from the outer circumferential surface of the coupling boss connection end 3, the projection height of the circumferential flange is the same as the projection height of the circumferential projection 6 of one end of the coupling boss 5. In this way the circumferential flange and the circumferential projection 6 of one end of the pipe joint 5 will be flush, thereby enhancing the aesthetics.

In addition, referring to fig. 9-11, when the safety valve hole 11 is formed on the pipe wall of the pipe joint connection end 3, a safety valve sheet 13 is disposed between the pipe joint connection end 3 and one end of the pipe joint 5, wherein a ventilation stopping structure 16 is disposed at an air passage opening 15 at one end of the pipe joint 5; the safety valve sheet 13 can be located at a position where the safety valve sheet 13 is stopped on the ventilation stopping structure 16 to close the airway opening 15 and open the safety valve hole 11, and the safety valve sheet 13 can be folded to a position where the airway opening 15 is opened and the safety valve hole 11 is closed under the intake pressure of the therapeutic gas delivered through the airway 4, referring to fig. 10, so that the ventilation stopping structure 16 can stop the safety valve sheet 13 from reversely rotating, thereby preventing the gas exhaled by the patient from entering the pipeline and avoiding repeated respiration.

Of course, the vent stop 16 may have a variety of configurations, for example, the vent stop 16 may include a ring of stop surfaces formed at the edge of the airway opening 15 and a stop strip extending within the airway opening 15. Alternatively, the vent stop 16 may comprise a stop web.

Furthermore, the present invention provides a respirator comprising a frame and a tube assembly 14 as described above, wherein the respirator connection end 2 is connected to the frame. Thus, as described above, the overall quality of the breathing mask is effectively improved.

Finally, the utility model provides a ventilation treatment device, which comprises the breathing mask. Thus, as described above, the overall quality of the ventilation treatment device is effectively improved. The ventilation therapy device may be a ventilator or other breathing device.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims (15)

1. The utility model provides a connecting pipe, its characterized in that, connecting pipe (1) is including respirator link (2) and coupling link (3), respirator link (2) are used for with respirator's frame attach, coupling link (3) are used for being connected with the one end of coupling (5) that have air flue (4), wherein, be provided with auxiliary positioning structure on the outer peripheral face of coupling link (3), auxiliary positioning structure is used for cooperate with the assistance-localization real-time with the ultrasonic welding tool when the one end of coupling link (3) and coupling (5) is connected connecting pipe (1).

2. A coupling tube according to claim 1, characterized in that the auxiliary positioning structure comprises a circumferential flange projecting radially outwardly from the outer circumferential surface of the coupling end (3).

3. A connection pipe according to claim 2, characterized in that the axial end face of the circumferential flange intended for the side facing the pipe joint and the end face of the pipe joint connection end (3) are flush.

4. A connection pipe according to claim 2, characterized in that the projection height of the circumferential flange is intended to be the same as the projection height of the circumferential projection (6) of one end of the pipe connection (5).

5. A pipe according to claim 2, wherein said circumferential flange is an annular flange (7), or said circumferential flange is a plurality and circumferentially spaced apart.

6. A coupling pipe according to claim 1, wherein said auxiliary fixing site structure comprises a circumferential groove formed by radially outwardly recessing on the outer circumferential surface of said coupling end (3).

7. A connecting tube according to claim 6, characterized in that the circumferential groove is an annular groove (8), or in that it is a plurality of and circumferentially spaced apart.

8. The connecting pipe according to any one of claims 1 to 7, wherein a circumferentially extending clamping groove (9) is formed on the end surface of the pipe joint connecting end (3), and the clamping groove (9) is used for clamping and matching with a circumferentially extending clamping protrusion (10) on the end surface of one end of the pipe joint (5);

and/or the presence of a gas in the gas,

the joint that is formed with circumference extension on the terminal surface of coupling link is protruding, the joint arch be used for with the one end terminal surface of coupling on the joint groove joint cooperation of circumference extension.

9. A connection pipe according to any one of claims 1 to 7, wherein a safety valve hole (11) is formed in a pipe wall of the pipe joint connection end (3), and a mounting hole (12) is formed in an end surface of the pipe joint connection end (3), the mounting hole (12) being used for mounting a mounting head (17) of a safety valve sheet (13) capable of opening and closing the safety valve hole (11).

10. A tube assembly, characterized in that the tube assembly (14) comprises a tube fitting (5) with an air duct (4) and a connection tube (1) according to any one of claims 1-9, wherein,

the pipe joint connecting end (3) of the connecting pipe (1) is connected with one end of the pipe joint (5).

11. The pipe assembly of claim 10, wherein a circumferentially extending clamping groove (9) is formed on the end face of the pipe joint connection end (3), a circumferentially extending clamping protrusion (10) is formed on the end face of one end of the pipe joint (5), and the clamping protrusion (10) is in clamping fit with the clamping groove (9);

and/or the presence of a gas in the gas,

when being formed with the joint of circumference extension protruding on the terminal surface of coupling link, be formed with the joint groove of circumference extension on the one end terminal surface of coupling, the joint protruding with joint groove (9) joint cooperation.

12. The pipe assembly according to claim 10, wherein when the auxiliary positioning structure includes a circumferential flange radially outwardly protruding from the outer circumferential surface of the coupling joint end (3), a protrusion height of the circumferential flange is the same as a protrusion height of the circumferential protrusion (6) of the one end of the coupling joint (5).

13. The pipe assembly according to any one of claims 10 to 12, wherein a safety valve sheet (13) is provided between the pipe joint connection end (3) and one end of the pipe joint (5) when a safety valve hole (11) is formed on a pipe wall of the pipe joint connection end (3),

a ventilation stop structure (16) is arranged at the air channel opening (15) at one end of the pipe joint (5);

the safety valve plate (13) can be located at a position where the safety valve plate is stopped on the ventilation stopping structure (16) to close the air channel opening (15) and open the safety valve hole (11), and the safety valve plate (13) can be folded to a position where the air channel opening (15) is opened and the safety valve hole (11) is closed under the air inlet pressure of the therapeutic gas conveyed through the air channel (4).

14. A breathing mask, characterized in that the breathing mask comprises a frame and a tube assembly (14) according to any one of claims 10-13, wherein the breathing mask connection end (2) is connected to the frame.

15. A ventilation therapy device comprising the respiratory mask of claim 14.

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